/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.solr.response;

import java.io.Writer;
import java.io.IOException;

import org.apache.solr.common.util.NamedList;
import org.apache.solr.request.SolrQueryRequest;

public class PHPResponseWriter implements QueryResponseWriter {
	static String CONTENT_TYPE_PHP_UTF8 = "text/x-php;charset=UTF-8";

	public void init(NamedList n) {
		/* NOOP */
	}

	public void write(Writer writer, SolrQueryRequest req, SolrQueryResponse rsp)
			throws IOException {
		PHPWriter w = new PHPWriter(writer, req, rsp);
		try {
			w.writeResponse();
		} finally {
			w.close();
		}
	}

	public String getContentType(SolrQueryRequest request,
			SolrQueryResponse response) {
		return CONTENT_TYPE_TEXT_UTF8;
	}
}

class PHPWriter extends JSONWriter {
	public PHPWriter(Writer writer, SolrQueryRequest req, SolrQueryResponse rsp) {
		super(writer, req, rsp);
	}

	@Override
	public void writeNamedList(String name, NamedList val) throws IOException {
		writeNamedListAsMapMangled(name, val);
	}

	@Override
	public void writeMapOpener(int size) throws IOException {
		writer.write("array(");
	}

	@Override
	public void writeMapCloser() throws IOException {
		writer.write(')');
	}

	@Override
	public void writeArrayOpener(int size) throws IOException {
		writer.write("array(");
	}

	@Override
	public void writeArrayCloser() throws IOException {
		writer.write(')');
	}

	@Override
	public void writeNull(String name) throws IOException {
		writer.write("null");
	}

	@Override
	protected void writeKey(String fname, boolean needsEscaping)
			throws IOException {
		writeStr(null, fname, needsEscaping);
		writer.write('=');
		writer.write('>');
	}

	@Override
	public void writeStr(String name, String val, boolean needsEscaping)
			throws IOException {
		if (needsEscaping) {
			writer.write('\'');
			for (int i = 0; i < val.length(); i++) {
				char ch = val.charAt(i);
				switch (ch) {
				case '\'':
				case '\\':
					writer.write('\\');
					writer.write(ch);
					break;
				default:
					writer.write(ch);
				}
			}
			writer.write('\'');
		} else {
			writer.write('\'');
			writer.write(val);
			writer.write('\'');
		}
	}
}
